The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 25, 2020
Filed:
Jun. 05, 2015
Atlantic Inertial Systems Limited, Plymouth, Devon, GB;
Michael Durston, Plymouth, GB;
Kevin Townsend, Liskeard, GB;
ATLANTIC INERTIAL SYSTEMS, LIMITED, Plymouth, Devon, DE;
Abstract
In a method for open loop operation of a capacitive accelerometer, a first mode of operation comprises electrically measuring a deflection of a proof mass () from the null position under an applied acceleration using a pickoff amplifier () set to a reference voltage Vcm. A second mode of operation comprises applying electrostatic forces in order to cause the proof mass () to deflect from the null position, and electrically measuring the forced deflection so caused. In the second mode of operation the pickoff amplifier () has its input () switched from Vcm to Vss, using a reference control circuit (), so that drive amplifiers () can apply different voltages Vdd to the proof mass () and associated fixed electrodes ().